Leviticus 8:15

“You shall put them on Aaron your brother and on his sons with him; and you shall anoint them and ordain them and set them apart as holy, that they may minister to Me as priests.

“Now this is what you shall do to them to set them apart as holy to minister as priests to Me: take one bull from the herd and two rams without blemish,

“You shall gird them with sashes, Aaron and his sons, and bind caps on them, and they shall have the priesthood by a perpetual statute. So you shall ordain Aaron and his sons.

“You shall take some of the blood of the bull and put it on the horns of the altar with your finger; and you shall pour out all the blood at the base of the altar.

‘The priest shall also put some of the blood on the horns of the altar of fragrant incense which is before Yahweh in the tent of meeting; and all the blood of the bull he shall pour out at the base of the altar of burnt offering which is at the doorway of the tent of meeting.

Moses and Aaron were among His priests, And Samuel was among those who called on His name; They would call upon Yahweh and He would answer them.

‘You shall also take some of its blood and put it on its four horns and on the four corners of the ledge and on the border round about; thus you shall purify it and make atonement for it.

And in the same way, both the tabernacle and all the vessels of the ministry he sprinkled with the blood.